Thallium

Compounds of thallium:

thallium (I) selenide

Synonyms

thallium (I) selenide

thallium selenide

dithallium selenide

Physical properties

Colour: grey

Appearance: solid

Melting point: 340°C

Boiling point:

Density: 9050 kg m-3

Element analysis and oxidation numbers

For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.

Element

%

Formal oxidation state

Formal electronic configuration

Se

16.19

-2

[Ar].3d10.4s2.4p6

Tl

83.81

1

[Xe].4f14.5d10.6s2

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Tl2Se unit with the most intense ion set to 100%.